Circular polarization dichroic super lens and light path system comprising same

A dichroic and circularly polarized light technology, applied in polarizing elements, optics, optical elements, etc., can solve the problems that functional devices have not made significant progress, and achieve the effect of huge application prospects

CN110297287AActive Publication Date: 2019-10-01SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2019-10-01

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Abstract

The invention discloses a circular polarization dichroic super lens and a light path system comprising the same. The super lens comprises a substrate and a surface structure; the surface structure comprises a metal layer and a plurality of spiral surface structures arranged in an array, the metal layer is formed on the spiral surface structures, and the plurality of spiral surface structures are arranged on the substrate. The range of the rotation angle of the plurality of spiral surface structures along the radial direction is 0-360 degrees, and the phase of the left-handed circularly polarized light and the right-handed circularly polarized light passing through the super lens can realize full-phase delay. The super lens of the embodiment of the invention can provide a new idea for realizing the combined function of focusing imaging and circular dichroism for a single device, and has great application prospect in the aspects of chiral sensing measurement, imaging, display, biologicaldetection and the like.
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Description

technical field

[0001] The invention relates to the technical field of polarizers, in particular to a circular polarization dichroic superlens and an optical path system comprising the superlens. Background technique

[0002] With the rapid development of nanophotonics and nanofabrication technology, micro-nano structured optical devices have attracted people's attention because of their flexible design, strong ability to control electromagnetic fields, small size, light weight, and easy integration, which can realize multiple functional devices. Among them, micro-nano devices with imaging function and polarization detection function are the two most widely studied types. Compared with traditional optical lenses, metalens is a kind of metasurface lens with micro-nano structure, which can control the amplitude, phase and polarization state of electromagnetic waves in the transmitted or reflected field by adjusting the sub-wavelength scale micro-nano structure. Focusing or im...

Examples

Embodiment Construction

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art fall within the protection scope of the present invention.

[0055] like figure 1 and figure 2 As shown, the embodiment of the present invention provides a circularly polarized dichroic superlens 10, the superlens 10 includes a substrate 12 and a surface structure 13; the surface structure 13 includes a metal layer 14 and a plurality of helical surface structures 11 arranged in an array , the metal layer 14 is formed on the helical surfa...